Touch switch
The object of the present invention is to provide a touch switch that enables reduction in the low-sensitivity region where the contact by fingers cannot be detected. The touch switch of the present invention comprises an insulating layer; sensor electrodes as a plurality of first electrodes provided on one surface of the insulating layer; a plurality of wire portions provided on one surface of the insulating layer, individually connected to the sensor electrodes; and auxiliary electrodes as a plurality of second electrodes provided on the other surface of the insulating layer, each auxiliary electrode being provided in a portion opposite each sensor electrode, wherein a boundary of adjacent auxiliary electrodes is provided in a region between adjacent sensor electrodes.
1. A touch switch comprising:
a substrate;
wire electrodes as a plurality of transparent first electrodes provided on the substrate, each wire electrode having a conductive wire and a conductive area connected to the conductive wire;
an insulating layer that covers the wire electrodes, the insulating layer having at least one contact hole formed on the conductive area of each wire electrode; and
sensor electrodes as a plurality of transparent second electrodes provided on the insulating layer, each sensor electrode being provided in a portion corresponding to the conductive area of each wire electrode and being electrically connected to the conductive area via the contact hole, wherein
at least a part of each sensor electrode has an edge that forms in-plane irregular patterns, and
a boundary of adjacent sensor electrodes is formed by engaging the irregular patterns at predetermined intervals.
2. The touch switch according to claim 1 , wherein
the sensor electrodes are densely-arranged in an upper portion of a reference region of the substrate where the wire electrodes are provided.
3. The touch switch according to claim 1 , wherein gaps between the sensor electrodes are 10 μm to 3 mm.
4. A touch switch comprising:
an insulating layer;
sensor electrodes as a plurality of first electrodes provided on one surface of the insulating layer;
a plurality of wire portions provided on the one surface of the insulating layer, and individually connected to the sensor electrodes; and
auxiliary electrodes as a plurality of second electrodes provided on the other surface of the insulating layer, each auxiliary electrode being provided in a portion opposite each sensor electrode, wherein:
a boundary of adjacent auxiliary electrodes is provided in a region between adjacent sensor electrodes, and
the auxiliary electrodes are electrically independent.
5. The touch switch according to claim 4 , wherein
the auxiliary electrodes are densely-arranged in an upper portion of a reference region where the sensor electrodes are provided.
6. The touch switch according to claim 4 , wherein
gaps between the auxiliary electrodes are 10 μm to 3 mm.
7. The touch switch according to claim 4 , wherein
the sensor electrodes are formed of a metal wire mesh.
8. The touch switch according to claim 4 , wherein
the wire portions are formed of at least one metal wire.
9. The touch switch according to claim 4 , wherein
at least a part of each auxiliary electrode has an edge that forms in-plane irregular patterns, and
a boundary of adjacent auxiliary electrodes is formed by engaging the irregular patterns at predetermined intervals.
10. The touch switch according to claim 4 , wherein
the sensor electrodes have substantially identical areas.